VERITAS Volume Manager 3.1 Administrator's Guide

Volume Tasks
Changing Plex Status: Detaching and Attaching Plexes
Chapter 6272
In this case, the state of vol01-02 is set to STALE. When the volume is
next started, the data on the plex is revived from the other plex, and
incorporated into the volume with its state set to ACTIVE.
To manually change the state of a plex, see “Recovering a Volume”. See
the vxmake(1M) and vxmend(1M) manual pages for more information
about these commands.